This Cisco IOS® Software special release is a short-lived release and will migrate into the first release of the 12.4T train. Six months after the migration into the 12.4T train, this release will no longer be orderable and will no longer be configurable in the dynamic configuration tool.
PRODUCT OVERVIEW
This product bulletin provides content and delivery information for Cisco IOS Software Release 12.3(11)YK. It should be used in conjunction with the product bulletin for Cisco IOS Software Release 12.3T. It supports Cisco® 830 Series secure broadband routers (Cisco 831, Cisco 836, and Cisco 837) and Cisco 2801 integrated services routers.
This product bulletin only lists Cisco IOS Software Release 12.3(11)YK features that are new to the respective routers; more information is available in the release notes. Customers should be prepared to upgrade using the migration path described in Figure 1.
NEW FEATURES IN CISCO IOS SOFTWARE RELEASE 12.3(11)YK
Table 1 lists the features delivered in Cisco IOS Software Release 12.3(11)YK.
Table 1. Features Delivered in Cisco 12.3(11)YK
New Features
Cisco 831
Cisco 836
Cisco 837
Cisco 2801
E1 R2 Collect Call Blocking
No
No
No
Yes
VRF Lite
No
Yes
Yes
No
DETAILED INFORMATION
New Features
E1 R2 Collect Call Blocking Feature
Cisco 2801 Routers-IP Voice and Above Images
The E1 R2 Call Blocking feature provides two ways to block incoming collect calls-category-based and double answer. With category-based call blocking, collect calls will be blocked based on a specific category. For example, in Brazil, collect calls arrive with a category II-8, for which the Cisco access router will send B-7 as a response instead of an answer signal. This approach is only applicable when switches in the central office support category-based blocking.
For legacy switches that do not support category-based blocking, the double answer method is implemented on the Cisco 2801 router to support the collect-call blocking. For an incoming collect call, the gateway will answer the call with a clearback after one second and re-answer the call after two seconds, causing the collect call to be dropped and normal calls to stay connected. This can be implemented as a command-line interface (CLI) option for any country.
VRF Lite
Cisco 831, 836, and 837 Routers-IP Plus and Above Images
Virtual routing and forwarding (VRF) lite allows separate routed networks with distinct routing tables and potentially overlapping address space to exist on the same router. When enabled, Ethernet 2 will allow for a DMZ to be enabled on Port 4 of the switch. For this release, physical and dialer interfaces have been tested and are supported. IP Security (IPSec) tunnels and Layer 2 Tunneling Protocol (L2TP) tunnels initiated from the router are not supported for VRF context endpoints.
Tables 2 and 3 list image product numbers and feature sets for Cisco 830 Series and 2801 routers. Tables 4 and 5 list ordering information for Cisco 830 Series and 2801 routers.
Table 2. Image Product Numbers and Descriptions for Cisco 830 Series Secure Broadband Routers
Platform
Feature Set
VRF Lite
Cisco 831
c831-k9o3sy6-mz
c831-k9o3y6-mz
No
Yes (partial)
Cisco 836
c836-k9o3s8y6-mz
c836-k9o3sy6-mz
c836-k9o3y6-mz
Yes
Yes
No
Cisco 837
c837-k9o3sy6-mz
c837-k9o3y6-mz
Yes
No
SOHO91
soho91-k9oy6-mz
No
SOHO96
soho96-k9oy1-mz
No
SOHO97
soho97-k9oy1-mz
soho97-oy1-mz
Yes
No
Table 3. Image Product Numbers and Descriptions for Cisco 2801 Integrated Services Routers
Platform
Feature Set
E1 R2 Collect Call Blocking Feature
Cisco 2801
c2801-adventerprisek9-mz
Yes
c2801-advipservicesk9-mz
Yes
c2801-advsecurityk9-mz
No
c2801-entbase-mz
Yes
c2801-entservicesk9-mz
Yes
c2801-ipbase-mz
No
c2801-ipvoice-mz
Yes
c2801-spservicesk9-mz
Yes
Table 4. Feature Sets and Ordering Information for Cisco IOS Software Release 12.3(11)YK for Cisco 830 Series Secure Broadband Routers
Cisco 830 Platforms
Recommended Memory
Platform
Software Product Description
Image File Name
Part Number
Flash
DRAM
Cisco 831
Cisco 831 IOS IP/FW Triple Data Encryption Standard (3DES)
